SAP BI 4.0 Analysis OLAP and Managing authentication and security

Hi all,

I defined a OLAP connection for accessing a MS SQL 2008 cube. I'd like to manage also security issues, like the correct visibility of data for specific users.

For example, I have a sales data cube containing information of different countries. I define a OLAP connection for that cube and I create a Analysis view of that data.

want to manage data segregation (some users can only see data from Italy, other users can only see data from England, etc). I'm reading also some manuals and it seems I can't decide this kind of data segregation via SAP BO. Is it so? Do I have to manage these issues using MS SQL server authentication and security or there is a way to manage also with BO Security?

Thanks all for the support!